Descendant of the hated Kito family I'll get you back my heart! What suddenly appeared in front of Akito Kito, an unhappy junior high school student , Demon Tamon and follower Yakusha. Once a fallen ancestor devoured his heart, now many years have passed. He said he came to take the heart of his descendant Akihito. However, Akito's heart is severely weak because of repeated misfortunes. Many people have noticed that when they feel happy, their heart strength increases. Unwilling to live with Akihito and retrain his heart ...